If I go to, for example, Effect > Amplify and decide I want to find out more about this effect by clicking on the ?, I am simply taken to whatever page is already open in my browser. I think this is meant to take me to the documentation file for that effect.
Going to the Help menu and selecting Quick Help or Manual has the same effect.
I am aware that there are functioning links to Tips, Tutorial, and Manual at the top of this page. I’m just letting you know about this.
If I don’t have any browser tabs open, clicking the ? and Help menu items brings me to the appropriate pages on your site. But I, and probably most people, have browser tabs open pretty much all of the time.
I just tested again and either with no browser open or browser already open on a non-Audacity page I still get diected successfully to the Manual’s Amplify page when i ujse tyhe “?” help button in the Amplify effect - so I’m totally puzzled and baffled …
BTW the browser I’m using is the Safari that is natively provided on my Mac